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Πέμπτη 3 Μαΐου 2018

Disease course and long-term outcome of juvenile localized scleroderma: Experience from a single pediatric rheumatology Centre and literature review

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Publication date: Available online 3 May 2018
Source:Autoimmunity Reviews
Author(s): Giorgia Martini, Gloria Fadanelli, Anna Agazzi, Fabio Vittadello, Alessandra Meneghel, Francesco Zulian
Juvenile Localized Scleroderma (JLS) is a rare disorder that may cause severe aesthetic sequelae and functional disability. To date, data on natural history and long-term outcome are discordant and difficult to compare due to the heterogeneity of clinical subtypes, treatments and methods to evaluate activity and outcome in previous studies.A retrospective and cross-sectional study including 133 patients followed between January 1991 and December 2016 was conducted at our Pediatric Rheumatology Centre. Disease course was drawn by retrospective analysis of patients' clinical features, treatment, disease course and outcome at the last evaluation. Disease activity and severity of tissue damage were assessed by using parameters derived from the Localized Scleroderma Cutaneous Assessment Tool (LoSCAT) and thermography. Most patients achieved complete remission, as only 12.5%, all with the linear subtype, had still active disease after over 10 years of follow-up. At least one disease relapse occurred in 22.2% of patients and first flare was observed 20 months after first treatment discontinuation. Mild tissue damage was observed in more than half of patients, in 25.4% was moderate and in 23.0% severe; 19.8% presented a functional limitation. The entity of skin and subcutaneous fat loss established at the early stages of the disease as 27.8% of patients with shorter disease duration had severe damage and the rates remained constant in patients with longer follow-up. The delay in start of systemic treatment was associated with longer disease activity and higher relapse rate. Patients with linear scleroderma (LS), pansclerotic morphea (PM) and mixed subtype (MS) presented more severe aesthetic and functional damage but did not differ from other subtypes as for rate of complete remission.JLS in some patients can be a very aggressive disease with persistent activity after >10 years and/or several disease relapses. As tissue damage establishes early in disease course a prompt diagnosis and start of appropriate treatment is crucial to control inflammation, to limit and stabilize damage, before it become irreversible. Clinicians must be aware that children with JLS may present disease reactivation so it is important to closely follow-up patients, particularly in the first 2 years after discontinuation of treatment when disease relapses may occur more frequently.



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